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All results from a given calculation for K2O2 (dipotassium dioxide)

using model chemistry: PBEPBE/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1AG
Energy calculated at PBEPBE/TZVP
 hartrees
Energy at 0K-1349.692068
Energy at 298.15K 
HF Energy-1349.692068
Nuclear repulsion energy193.011184
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at PBEPBE/TZVP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 649 641 0.00 143821.80 0.34 0.51
2 Ag 225 222 0.00 13477.26 0.27 0.43
3 B1u 422 418 73.67 0.00 0.69 0.81
4 B2u 159 157 59.59 0.00 0.00 0.00
5 B3g 425 420 0.00 44239.78 0.75 0.86
6 B3u 53 52 100.86 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 965.8 cm-1
Scaled (by 0.9888) Zero Point Vibrational Energy (zpe) 955.0 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at PBEPBE/TZVP
ABC
0.80515 0.04017 0.03826

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/TZVP

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 2.321
K2 0.000 0.000 -2.321
O3 0.000 0.809 0.000
O4 0.000 -0.809 0.000

Atom - Atom Distances (Å)
  K1 K2 O3 O4
K14.64112.45752.4575
K24.64112.45752.4575
O32.45752.45751.6180
O42.45752.45751.6180

picture of dipotassium dioxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
K1 O3 K2 141.560 K1 O4 K2 141.560
O3 K1 O4 38.440 O3 K2 O4 38.440
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.793      
2 K 0.793      
3 O -0.793      
4 O -0.793      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.898 0.000 0.000
y 0.000 -41.582 0.000
z 0.000 0.000 7.908
Traceless
 xyz
x -19.061 0.000 0.000
y 0.000 -27.587 0.000
z 0.000 0.000 46.647
Polar
3z2-r293.295
x2-y25.684
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 229.588
(<r2>)1/2 15.152